My raspbmc files that do various things.
Easy installer: https://alltheware.wordpress.com/2012/12/11/easiest-way-sd-card-setup/
Allows you to take photos with your camera via terminal
apt-get install gphoto2
See usbreset.c if you get an error saying that the usb device is already in use..
sudo apt-get update
sudo apt-get install python-dev
sudo apt-get install python-rpi.gpio